Dual Layer DVD writing...

[spaced]

My new laptop can record onto dvd, just like my pc, but it says on the disc tray "DVD - RW / DL"

I assume this is dual layer. What is dual layer recording? Whats the difference from normal recording?

Ta

[Kerplunk]

If you get a dual layer disc you can put twice as much info onto it as a single disc

[kempie]

http://www.dvd-recordable.org/modules.php?op=m odload&name=Reviews&file=index&req=showcontent &id=77

[fo3nix]

4 types of DVD:

DVD5
DVD9
DVD10
DVD18

DVD5 is like a regular CD in that it's one-sided (one side is the data, the other is the label), and also single-layer (just one layer of data).

DVD10 is twice a DVD5 (hence the name). So it's like taking two regular DVDs and putting them together so the label sides touch: double-sided, but still single layer.

DVD9 is dual layer, which is like the DVD5 but it has two layers of data, not just one. Still single-sided though, with the other side being the label side.

DVD18 is, you've guessed it, dual layer and double-sided.

[fo3nix]

Back when dual layer was quite expensive to produce, they made DVD14 discs, which were like one DVD5 and one DVD9 stuck together (double-sided; one side was single layer, the other was dual layer).